Machine for grinding the rims of glass vessels.



MJ MATHY. v '.MACHINE' FQR GRINDING TH E RIMS 0F GLASS VESSELS.

APPUCA'TiON FILED JUNE 8, l9l 5.

l ,241 ,236. Patented Sept. 25, 1917.

to be moved vertically at will so UNITED STATES rATnix -ga cl rion.

MAURICE MATHY, OF FLEMALLE-GRANDR'. ii-iiLGIUitt.

MACHINE FOR GRINDING THE RIMS OF GLASS VESSELS.

' Application filed June 8,

To all 1N1 0m it may concern:

Be it known that l. Mariner: Mom, a subject of the King of Belgium,residing at Flemallc-(lram'te. Belgium. 28 line Leopold, have inventedcertain new and useful Improvements in Machinesfor Grinding tho Rims ofGlass Vessels: and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to lettersor figures of reference marked therein, which form apart of thisspecification.

The present invention relates to a machine for grinding the upper rim ofglasses, cups and other glass vessels so as to polish said upper rim andat the same time to cut and straighten the same in such a manner thatits plane is' exactly parallel to the base plane of the vessel and thatall the vesscls-of set are shaped to the same height. v The machinesused for this purpose comprise generally a rotary grindstoneirotating ona vertical shaft and supplying water to the glass to be ground by meansof a duct providedin the axis of A fi rimlstone. In these machines. thevessel to be ground is secured to a holder adapted as to force the glassvessel against the grindstone. Such a device has disadvantages becausethe movable partsuscd for performing the vertical motion of'thc glass.being arranged under said glass, are damaged in a short time by theaction of water and abra'ding powder flowing down from the glass.

These inconveniences are avoided in the macl'iine according to thepresent invention, by the fact that thevessel to be ground remains quitemotionless While the grindstone is allowed to move vertically during theoperation so as to be brought into contact with the vessel. Theinvention also consists in means for adjusting the pressure exerted uponthe glass by the grindstone. and for limiting the vertical movement ofthe grindstone according to the height of the glass.

Means are also provided for supplying Specification of Iietters Patent.

the shaft and of the Patented Sept. 25, 1917. 1915. Serial no. 32.877.

water to all the parts of the operating face of the grindstone.

Figure l is a side view of a first form of the invention.-

Fig. 2 is a similar view of a second form of the invention.-

Fig. 3 is a partial vertical sectionyon'an enlarged scale, in thissecond form.

' The machine according to Fig. 1 comprises a vertical rotary shaft 1fixed to the grindstorte 2 and journaled in frame 4 and in a movablesleeve The shaft 1 is driven by an electric motor 6, by means of a beltand pulley 7; it can slide freely in the bea of a shoulder upon thesleeve 5. Said sleeve ring 3 and rests by. means a bearing 3 of theframe 4 at any desired height, by means of" a screw 48: the sleeve 5 isprovided with a rack 9 in gear with a pinion 10 thatcan be operated by.a lever ]1 in such as -manner 'as to cause a vertical movement of thesleeve 5. The weight of the vertically slid ing parts is balanced by acounterweight 12 hanging to a cable 13 secured by its other end to thesleeve 5 and passing over snitahlc pulleys 14.. Upon the lever 11is'arranged a weight 42. the position of which can be varied at\villjand which causes the lever 11 and at the same time the sleeve 5 togo down. In the shaft 1 and grindstone is bored an axial duct l5-throughwhich a hose 16 attached to the shaft 1 with, the' interposition of aioint allowing he shaft to rotate treclv. .ecured to a fixed table 19 byany suitable means. i i l Vhen the glass is secured to the table 18. theshaft 1 rotated at the required speed and the water supplied. the"workman, who is I holding the lever 1.1 in the upper position, releasesthe lever. the weight 42 of Which causes the sleeve 5 to go down and thegrindstone 3 to come into contact with the glass 17. stone upon theglass can be varied according to the thickness of the glass by varyingtheposition of the weight 42 on the lever The-glass to be ground iswire-gauze 47 is fixed to the pipesfia so as to pins 26 pass.

When the glass 17 has been ground out to I shoulders of the shaft, andprovided with.

two pins 26. A. lever 27 pivotally mounted at 28 on the frame 23 is soshaped as to form two arms surrounding the sleeve 24 and provided withslots 29 through which the On the lever 27 is also arranged a weight 30,the, position of which can be varied at will. The weight of the movableparts is partially balanced by the power of a spring 31. As a means forlimiting the downward movementof the shaft, an iron piece 32 isprovided; this piece is bent at a right angle and the horizontal arm isprovided with a circular hole through which the shaft 20 passes, whilein the vertical arm a longitudinal slotfs made, through which passes ascrew-threaded rod 34 fixed to the bearing 22; the piece 32 is securedto the bearing 22 at any desired height by means of a nut 33 crewed onthe rod 34. The shaft 20 is powe driven as in the apparatus shown atFig. *1.

Water is supplied by means of a hose 35 and an annular channel 36 whichsurrounds the cylindrical part 37 of the carrier of the grindstone 38and is attached to said cylindrical part by means of tightjoints adaptedto permit the carrier 37 to revolve freely. The water supplied to thechannel 36 is divided into several currents; a portion of this waterpasses through ducts 39 and 40 pro vided in the carrier 37 andgrindstone 38 and comes in the vessel to be ground. Other portions aresent against the lower face of the grindstone by means of pipes 44.

The ends 45 of these pipes are adapted to turn at it? on the pipes 44 insuch a manner that the ets can be directed at will against any desiredpoint of the grindstone.

prevent the water from being thrown about.

The vessel43 is securedto a fixed table 41.

Before beginning to grind a set of glass vessels, the workman arrangesthe weight-30 in the right position according to the pressure to beexerted on the vessels. and secures the iron piece 32 at the heightrequired. Then he lifts the lever 27, secures the vessel 43 to the table-11, opens the supply of water and releases the lever 27 then themachine performs automatically the work required.

It must be noted that the arrangement of pipes 44, 45 and .46, asdescribed hereinhefore in connection with the device represented inFigs. 2 and 3, can also he applied to the device represented in Fig. 1.In Such a case, the pipes 44 communicate with the axial duct 15 at anysuitable point below the sleeve What I claim is:

1. In a machine for grinding the rims of glass vessels, the combinationof a vertical shaft, a grindstone attached to the lower end of saidshaft, means for counterbalancing the vertical shaft and appendantparts, driving gear for rotating said shaft, means for fixing the glassvessel so that the rim thereof is presented to the grindstone, a pivotedlever operatively connected to said shaft, an adjustable weight on saidlever to gravitate the same and impart axial movement to the shaft sothat the grindstone thereon engages the rim of the glass vessel withpredetermined pressure, and central and radial conduits for conductingwater to the cutting surface of the grindstone.

2. In a machine for grinding the rims of glass vessels, the combinationof a vertical shaft, a grindstone attached to the lower end of saidshaft, means for fixin the glass vessel so that the rim thereof ispresented to the grindstone, means for axially displacing the verticalshaft so that the grindstone engages't-he rim of the glass vessel, and acentral condpit and adjustable radial conduits for conducting water tothe cutting surface of the grindstone.

3. In a machine for grinding the rims of glass vessels, the combinationof a vertical shaft, a grindstone attached to the. lower end of saidshaft, means for fixing the glass vessel so that the rim thereof ispresented to the grindstone, means for axially displacing the verticalshaft so that the grindstone engages the rim of the glass vessel, and aconduit branching, in proximity to the grindstone, into a plurality ofcentral and radial conduits, the latter being adapted to direct the flowof water against the inner face of the grindstone.

In testimony whereof I affix my signature in presence of two witnesses.

MAURICE M ATHY.

Witnesses Gsoncns VANDER IIAEGHEN, HENRI JOYEUX.

